发布主题时都会有预览，不知道预览是怎么做的呢？

可以使用http://wordpress.org/extend/plugins/theme-preview/这个theme preview插件。

还可以使用theme switcher等插件，还有http://wordpress.org/extend/plugins/theme-test-drive/都是不错的插件。

1. Upload the theme-preview folder and its contents to your wp-contents/plugins directory. 2. Activate in the Plugins menu. 3. Visit your site with a special parameter added to the URL Add query variables preview_theme and/or preview_css to your query string. For example, if you have a theme named "My Theme", which is installed in your wp-content/themes/my-theme directory, add the theme's directory name to your URL like this: http://example.com/index.php?preview\_theme=my-theme Sometimes, you create a new look for your site by just making new CSS, but you keep the existing PHP files intact. In that case, you con use the preview_css variable instead of preview_theme, or use them both together, like this: http://example.com/index.php?preview\_theme=default&preview\_css=my-theme